Average
#972 of 2,463 schools in NJ
Top 39% in state
Millstone River School
Elementary School · West Windsor-Plainsboro Regional School District
75 GROVERS MILL ROAD, Plainsboro, NJ 08536
Enrollment
813
Student-Teacher
10.3:1
Score
6.9
Grades
3rd – 5th
Enrollment
813
Student-Teacher
10.3:1
Score
6.9
Grades
3rd – 5th
Updated
2022-23
Updated 2022-23
How this school compares
In Plainsboro
#2 of 5
public schools
New Jersey elementary schools
#587 of 1,496
In district
#4 of 10
West Windsor-Plainsboro Regional School District
Equity
8.5 / 10
Exceptional
About Millstone River School
Millstone River School serves 813 students in grades 3-5 in Plainsboro, New Jersey, earning recognition as a high-performing elementary school with a MySchoolScout rating of 7.5 out of 10. The school ranks #330 out of 2,475 schools statewide, placing it in the 87th percentile among New Jersey elementary schools. With 79 full-time equivalent teachers, Millstone River maintains a favorable student-teacher ratio of 10.3:1, allowing for more individualized attention in the classroom.
The school demonstrates solid academic achievement, with 64% of students performing at proficient or above levels in ELA/reading and 63% reaching proficiency in mathematics across the grade levels served. The school draws from an educated and affluent community where 78% of residents hold bachelor's degrees or higher, and the median household income reaches $122,254. This well-resourced neighborhood, with a median home value of $603,100 and a low poverty rate of 3.4%, reflects the high priority families place on education.
Millstone River School operates in a rural setting near town, providing students with a more spacious learning environment while remaining accessible to the broader Plainsboro community of over 20,000 residents in the 08536 ZIP code area.
What Parents Should Know
Located in a rural area, Millstone River School may involve longer commutes for some families. Rural schools often serve as community anchors and may have smaller class sizes, but parents should consider transportation logistics, after-school program availability, and access to specialized services.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
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Data not available for this school
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Millstone River School — Students at Millstone River School score 64% proficient, which is above what's typical for similar communities (expected: 59%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
8.9%
Students qualifying for federal meal assistance
Test Scores NJ NJSLA (2023-24)
Based on 13 test records from NJ state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 6.3/10.
How Millstone River School Compares
See how Millstone River School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 70% (2019) to 63% (2022). Reading/ELA proficiency has declined from 70% (2019) to 64% (2022).
Location
75 GROVERS MILL ROAD, Plainsboro, NJ 08536
Nearby Alternatives
Families considering Millstone River School may also want to explore other elementary schools in the area. Riverside School (rated 9.7/10, 3.0 miles away, in nearby Princeton), which scores notably higher. Another option is Littlebrook School (rated 9.4/10, 3.5 miles away, in nearby Princeton), which scores notably higher. Additionally, YINGHUA INTERNATIONAL SCHOOL (rated 8.1/10, 3.8 miles away, in nearby Kingston), which scores notably higher. For more schools in Plainsboro, see our Plainsboro schools guide .
Nearby Schools
20 within 3.8 miNeighborhood Census ACS (2019-2023)
Census data for ZIP 08536 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$128,426
Median Home Value
$655,100
Median Rent
$1,908/mo
Population
20,558
College Educated
79.2%
Homeownership
44.1%
Avg Commute
33.2 min
Poverty Rate
2.3%
Median Age
36.7
Community Profile
The community surrounding Millstone River School has a median household income of $128,426. It is a well-educated community where 79% of adults hold a bachelor's degree or higher. The median home value in the area is $655,100, with a median rent of $1,908/month. The local poverty rate of 2.3% is relatively low. The average commute for residents is 33 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Chester M. Stephens Elementary School Budd Lake, NJ | 6.9 |
| Franklin Elementary School Westfield, NJ | 6.9 |
| Hopewell Crest Bridgeton, NJ | 6.9 |
| Jersey City Golden Door Charter School Jersey City, NJ | 6.9 |
| Lincoln Elementary School Edison, NJ | 6.9 |
| Ridge Street School Newark, NJ | 6.9 |
Frequently Asked Questions
Common questions about Millstone River School
What grades does Millstone River School serve?
Millstone River School serves students in grades 3rd through 5th.
How many students attend Millstone River School?
Millstone River School has an enrollment of approximately 813 students.
What is the student-teacher ratio at Millstone River School?
The student-teacher ratio at Millstone River School is 10.3:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Millstone River School rank in NJ?
Millstone River School is ranked #972 out of 2,463 schools in NJ.
What is Millstone River School's MySchoolScout rating?
Millstone River School has a composite rating of 6.9 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Millstone River School?
Based on the most recent state assessment data, Millstone River School has 65.3% math proficiency and 63.2% reading/ELA proficiency.
Is Millstone River School a charter school?
No, Millstone River School is not a charter school. It is a traditional public school operated by the local school district.
Is Millstone River School a Title I school?
No, Millstone River School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Millstone River School?
8.9% of students at Millstone River School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 3rd – 5th
- Enrollment
- 813
- Student-Teacher Ratio
- 10.3:1
- Teachers (FTE)
- 79
- Free/Reduced Lunch
- 8.9%
- Type
- regular
- Setting
- Fringe Rural
- County
- Middlesex County
- Phone
- (609) 716-5500
- Data Year
- 2023–2024
Resources & Links
District
West Windsor-Plainsboro Regional School District- District Enrollment
- 9,015
- Schools in District
- 10
- Per-Pupil Spending
- $24,392
- District Rank
- #4 of 10
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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